OK,you asked! "Most" girls prefer to be nude because they can get just about anything they want from "MOST" men,if they are in the nude when asking. (On the other hand..if I saw a nude man,I would probably run like hell,lmao)

Another reason could be that they want to get a tan?Maybe they are hot?I am sure there are more reasons,but I can't think of any more right now...

Go into a bunch of full video chat rooms on multiple sites. Write down how many men are in the rooms and how many women are in the rooms. Then, write down how many are nekkid. I think you will find that the ratios show men are more often nekkid.